Perhaps you should try some spelling variations:
tranh chua » tranh cua, trinh chuan, tranh chap
chua dang » cua dang, chua dong, chua nang
dang cong » dung cong
cong bang » cuong bang, dong bang, hong bang
ho chieu » theo chieu, hoc thieu, doi chieu
hang cau » hang ca, nhung cau, nang cao
hang dau » hang va, hang tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc hien)) sach - canh tranh chua dang cong bang ((hang cau) or (hang dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc hien)) sach - canh tranh chua dang cong bang ((hang cau) OR (hang dau)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc hien)) sach - canh tranh chua dang cong bang ((hang cau) or (hang dau))*.